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Apple will introduce its first Macs using Intel Pentium processors by next June, Jobs told developers here. The company plans to complete its move from its current PowerPC-based computers to Intel-based ones by the end of 2007.

The move largely has to do with performance and power-consumption issues, Jobs said, noting that the company has been unable to deliver a notebook computer running the top-of-the-line PowerPC G5 chip to date.

"We want to be making the best computers for our customers going forward," Jobs said. "As we look ahead and envision the array of products we want to build, we don't know how we're going to build them" with PowerPC architecture.

Although reports had surfaced in recent weeks that Apple was considering the change, many in the Mac developer community seemed stunned by the move. Jobs' announcement was greeted initially with silence from the crowd here.

Intel is the dominant chipmaker for PCs, but none of the computers that Apple has made to date have run on Intel's processors. The original Macintosh and Apple II computers ran on chips from
Motorola(MOT). About 10 years ago, Apple moved to the PowerPC chip designed by Motorola and
IBM(IBM - Get Report).

Apple has apparently been considering the move to Intel for some time. Apple has quietly designed every version of its OS X operating system to run on Intel chips since the first iteration of OS X five years ago.

The move to Intel chips could allow Apple to cut prices on its computers. Intel typically helps subsidize its hardware partners' marketing expenses. One of the problems Apple has faced in gaining new customers is that its machines are typically priced above comparable ones from competitors.